i bought the Technotrend CT2-4400 USB stick to use it with my QNAP TS-269L. Im running QTS 4.2.1 and downloaded last build of dvblink software (5.5.0) from your homepage. dvblink was installed properly but TV source is saying that he can't not find a valid tuner? The tuner was connected to one of USB ports on the back, now he is connected to the front. -> no functionCan you please advise.